Solar heating is an environment-friendly and effective means for reducing 
building energy consumption which is increased day by day and enabling a city and a village to enjoy the same heating comfort, but an existing heat collecting way is large in heat collecting area, low in 
heat transfer efficiency and low in 
building integration flexibility. The invention provides a novel solar building heating, heat collecting and transmitting 
system without mechanical work consumption. The solar building heating, heat collecting and transmitting 
system mainly consists of a composite 
paraboloid light condensation heat collector, a loop-circuit 
heat pipe and a user hot water 
system, wherein the loop-circuit 
heat pipe is formed by connecting multiple evaporators in parallel. According to the solar building heating, heat collecting and transmitting system provided by the invention, the composite 
paraboloid light condensation heat collector is adopted, and efficient collecting of 
solar energy is realized through pure light condensation; efficient collecting of heat is realized through the multiple evaporators of the loop-circuit 
heat pipe which are connected in parallel; 
solar heat driving without the mechanical work consumption is realized by utilizing capillary suction forces of capillary cores of the multiple evaporators of the loop-circuit heat 
pipe; efficient, long-distance and multi-angle transmission of high-load 
solar heat energy is realized by utilizing the circulation 
phase change of a working medium in a 
closed space, and thus efficient collection and transmission of low-temperature 
solar energy are realized.